Vaadin Blog
In my recent blog post, where I showed you how to estimate or measure the memory consumption of your Java application, I promised to provide some simple tips for optimizing your application’s memory usage. Some of the following tips are Vaadin-specific, while others are applicable to JVM services in general. As discussed in the previous article, despite Vaadin Flow’s stateful nature, you can host a ton of users even on modest hardware. However, there are a couple of pitfalls that may end up consuming excessive resources.
Adding speech recognition to Vaadin apps
Our previous blog post added wake word detection for a Vaadin application using Picovoice. That is a robust in-browser approach to creating always-listening apps. You might want to use that for full speech recognition, but the draft standard web speech API also provides a way to voice-enable ...
Always-Listening Voice Commands for Vaadin web applications
Make your Vaadin web application more user-friendly and accessible with always-listening voice commands! With this quick 15-minute tutorial, you can integrate voice commands like "Alexa," "Hey Siri," and "Computer" into your application using the Picovoice Porcupine Wake Word Engine. Create a ...
How to build a ChatGPT assistant for your documentation
ChatGPT can be a helpful tool for development and learning. But only if it knows about the technology you're using. The problem with ChatGPT and many other Large Language Models (LLMs) is that they are only trained on data up to a certain date. Tools like Bing, Bard, and ChatGPT plugins allow ...
How many users can you host per node with Vaadin Flow? Let’s do the math!
Servlet session size has been a myth for ages. Many Java developers tend to religiously avoid storing anything in session because somebody at Google said that shouldn’t be done. With Vaadin Flow, that is the root of all goodness. The pure Java development model, the productivity, and the simplicity ...
Vaadin is among the frontrunners as a future workplace!
In today’s world, employers no longer get to pick and choose the people joining their organizations. Today, tomorrow, and in the future, especially in our industry, people and talent choose their employers. Companies increasingly need to understand what is important for employees when they choose ...
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Building a Chatbot in Vaadin with OpenAI
Want to build a better version of ChatGPT? Here is how to use OpenAI's Chat completions API to add a robot participant to your Vaadin Flow chat app. Create a new chat app project Using the service at start.vaadin.com, create a new Vaadin application. There is a complete chat example template, but ...
How to add Single-Sign-On to your Vaadin application
According to our recent community survey, nearly 75% of Vaadin users store their users' login credentials in their own database. While this may seem like the best way to keep control of your data and business processes, it can hurt your application's user experience and overall security. ...
Masaaki Tsugami on developing a collaborative tool for Instagram contests
In January 2023, we hosted a Collaboration Kit challenge for the Vaadin community. The goal was to use the Collaboration Kit to design or build a web application with real-time user collaboration. In this blog post series, we take a closer look at the winning applications! Introducing Masaaki ...
Designing a collaborative enterprise project management tool with Matija Vojvodic
In January 2023, we hosted a Collaboration Kit challenge for the Vaadin community. The goal was to use the Collaboration Kit to design or build a web application with real-time user collaboration. In this blog post series, we take a closer look at the winning applications! Meet Matija Vojvodic – ...